Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846884 | Process for producing cold-bonded iron ore for use in a blast furnace | Tatsuhiko Shigematsu, Chitose Shiotani, Yohzi Tozawa | 1989-07-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846884 | Process for producing cold-bonded iron ore for use in a blast furnace | Tatsuhiko Shigematsu, Chitose Shiotani, Yohzi Tozawa | 1989-07-11 |